Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college. From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important.